Abb THHQB21100 Miniature Circuit Breaker 100A 22ka

Product Description

The ABB THHQB21100 is a 2-pole miniature circuit breaker (MCB) rated at 100 amps with a 22kA interrupting capacity. It provides overcurrent and short-circuit protection in residential, commercial, and light industrial electrical distribution systems. The THHQB series is designed for installation in compatible load centers and panelboards where reliable branch-circuit protection is required. Licensed electricians install this breaker as part of service panel work, branch circuit additions, or equipment protection upgrades. The 100A rating makes it suitable for high-draw branch circuits and subpanel feed applications.

The THHQB21100 is suited for use in load centers and distribution panels requiring a 2-pole breaker with a 100A continuous rating. Its 22kA interrupt rating supports installations where available fault current demands a higher-rated protective device. Typical applications include commercial tenant buildouts, residential service upgrades, and industrial feeder protection where panel space and fault current levels must both be addressed.

Key Features

• 100A continuous current rating for high-demand branch and feeder circuits
• 22kA interrupting capacity for installations with elevated available fault current
• 2-pole configuration for 240-volt branch circuit protection
• THHQB series design for compatibility with supported panelboard and load center applications
• Provides both overcurrent and short-circuit protection in a single device

Compatibility

Designed as an OEM-style replacement and standard-fit 2-pole miniature circuit breaker for panelboards and load centers that accept the THHQB breaker series.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lock out the panel before removing or installing any breaker. Verify that the available fault current at the installation point does not exceed the 22kA interrupting rating of this device. Confirm panelboard compatibility with the THHQB series before installation.

Technical Specifications

• Current Rating: 100 amps
• Interrupting Capacity: 22kA
• Number of Poles: 2
• Series: THHQB
• UPC: 78316413498

Standard Information

• Brand: ABB
• Manufacturer Part Number: THHQB21100